Improvement in driven-well strainers



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` OI-IARI,Es E. MAOOMBEE AND .OOEYDON E. WHELPLEY, OE MINNEAPOLIS,

MINNESOTA.

--V Letters Patent No. 100,426, dated March 1, 1870.

'IMPROVEMENT 1N DRrvEN-WELL STRAINERS.

The schedule referred to in these Letters Patent and making part of the same.

L 'o all chant it may concern:

Be it known rthat we, CHARLES E. MAGOMBER and ConYDoN E. WHELPLEY, of Minneapolis, in the ,county of' Hennepin, and State of Minnesota, have invented certain new' and useful Improvements inA Tubes for Driven \Vells; and we do hereby declare that the following is a "full, clear, and exact descripsion thereof, reference being had to the accompanying drawings making part oi' this specification, and to the letters of reference marked thereon, like letters indieating like parts wherever they occur.

To-ena-ble others skilled in the art to `c oustr1 n.-t and `use our invention, we will proceed to describelit.

Our inventionV relates to tubes for drive wells, and It consists in a novel manner of applying a strainer 'to the-peiforated end of the same, and in providing this strainer with awire or guard to protect being `torn or punotured by gravel, Ste.

In the drawing- Y Figure 1 is a perspective view of our tube; Figure 2 is a cross-section of the same and Figure 3 is a vertical section of a part ofthe same, taken on the line a: :l: of iig. 2,

it from -A is the. tubel Ia-ving secured'to its lower end the tapering point B, as shown in" fig. 1.

This point B is of a diameter greater than the tube A, and is formed with several faces, leaving at their intersection sharp edges, as shown.

Through the tube A we make several rows of small holes, a, and over each row ot' holes, on theoutsideof the tube, we lay a strip of wire-gauze, b, and solder or braze it tothe tube, as shown in figs. 1, 2, and 3;

Over each strip of gauze b, opposite the centers of the holes, we place a wire, c, and solder it rmly in place, as shown at d c1, care being taken that the sol" derdoes not get into and obstruct the holes a.

When the tube thus constructed is forced Or driven into the earth, the wire r, serves as an effectual guard or protection for the gauze, and prevents it from being broken or torn by gravel, but at the same time does not prevent the free passage of water through the.

holes a into thepipe. r

In this manner we produce a strong, cheap, and ef fective strainer, which, although placed on the outsideY of thetube, is not liable to be `destroyed like those heretofore made in that manner, and 4which does n ot obstruct the tubes like those placed ou the inside. v

The gauze should be soldered fast, not onlyalongA its edges between the holes' maud the guard-wires c 'should also be soldered at the ends and between the Witnesses: DAVID MORGAN, JOHN VANDERWURKER. 

